Selected Balance Sheet Data (Tables)

9 Months Ended

Sep. 30, 2023

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net

(Millions of Dollars)	Sept. 30, 2023		Dec. 31, 2022
Accounts receivable, net
Accounts receivable	$	480	$	616
Less allowance for bad debts	(57)		(54)
Accounts receivable, net	$	423	$	562

Inventories

(Millions of Dollars)	Sept. 30, 2023		Dec. 31, 2022
Inventories
Materials and supplies	$	86	$	80
Fuel	78		68
Natural gas	90		171
Total inventories	$	254	$	319

Property, Plant and Equipment, Net

(Millions of Dollars)	Sept. 30, 2023		Dec. 31, 2022
Property, plant and equipment, net
Electric plant	$	16,343	$	15,771
Natural gas plant	6,293		5,949
Common and other property	1,500		1,415
Plant to be retired (a)	1,242		1,305
Construction work in progress	1,288		877
Total property, plant and equipment	26,666		25,317
Less accumulated depreciation	(6,013)		(5,665)
Property, plant and equipment, net	$	20,653	$	19,652

(a)Amounts include Comanche Units 2 and 3, Craig Units 1 and 2, Hayden Units 1 and 2 and coal generation assets at Pawnee pending facility gas conversion. Amounts are presented net of accumulated depreciation.